# Developers

- [SQL Processor](/docs-lenses/lenses-docs-5.0/developers/sql-processor.md): SQL Streaming
- [Data Application Deployment](/docs-lenses/lenses-docs-5.0/developers/sql-processor/data-application-deployment.md): Understand the principles under the hood of Lenses SQL Streaming
- [Streaming SQL](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql.md)
- [Concepts](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/concepts.md)
- [Set storage format](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/set-storage-format.md)
- [Projections](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/projections.md)
- [Joins](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/joins.md)
- [Functions](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/functions.md)
- [Custom functions](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/functions/custom-functions.md)
- [User-defined aggregation functions](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/functions/custom-functions/user-defined-aggregation-functions.md)
- [User Defined functions](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/functions/custom-functions/user-defined-functions.md)
- [Aggregations](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/aggregations.md)
- [Expressions](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/expressions.md)
- [Nullability](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/nullability.md)
- [Settings](/docs-lenses/lenses-docs-5.0/developers/sql-processor/streaming-sql/settings.md)
- [Deployment Options](/docs-lenses/lenses-docs-5.0/developers/sql-processor/deployment-options.md)
- [Create SQL Processor with SQL](/docs-lenses/lenses-docs-5.0/developers/sql-processor/create-sql-processor-with-sql.md)
- [Recipes](/docs-lenses/lenses-docs-5.0/developers/sql-processor/recipes.md)
- [API Catalog](/docs-lenses/lenses-docs-5.0/developers/api-catalog.md)
- [Clients](/docs-lenses/lenses-docs-5.0/developers/clients.md)
- [Golang](/docs-lenses/lenses-docs-5.0/developers/clients/golang.md)
- [Python](/docs-lenses/lenses-docs-5.0/developers/clients/python.md)
- [RestAPI](/docs-lenses/lenses-docs-5.0/developers/clients/restapi.md)